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      Vascular plants dataset of the herbarium (HSS) of Agrarian Research Institute Finca “La Orden-Valdesequera” (CICYTEX), Extremadura, Spain

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      PhytoKeys

      Pensoft Publishers

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          Abstract

          The HSS herbarium database includes 69,397 records of vascular plant taxa, representing 91.1% of the herbarium’s specimens as for December, 2019, which are available through the Global Biodiversity Information Facility (GBIF) website (accessible at https://doi.org/10.15468/siye1z). The database represents 4,343 species and 787 infraspecific taxa (530 subspecies, 130 varieties and 127 notho-species or hybrids) of 196 families and 1,164 genera, and 105 type sheets. So far, 97.7% of the databased records are georeferenced (geographic coordinates or MRGS coordinates) and the geographic area with the largest number of specimens is the southwest quadrant of the Iberian Peninsula (Spain and Portugal).

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          Most cited references 35

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          An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV

          (2016)
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            A Classification for Extant Ferns

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              Phylogeny and evolution of ferns (monilophytes) with a focus on the early leptosporangiate divergences.

              The phylogenetic structure of ferns (= monilophytes) is explored here, with a special focus on the early divergences among leptosporangiate lineages. Despite considerable progress in our understanding of fern relationships, a rigorous and comprehensive analysis of the early leptosporangiate divergences was lacking. Therefore, a data set was designed here to include critical taxa that were not included in earlier studies. More than 5000 bp from the plastid (rbcL, atpB, rps4) and the nuclear (18S rDNA) genomes were sequenced for 62 taxa. Phylogenetic analyses of these data (1) confirm that Osmundaceae are sister to the rest of the leptosporangiates, (2) resolve a diverse set of ferns formerly thought to be a subsequent grade as possibly monophyletic (((Dipteridaceae, Matoniaceae), Gleicheniaceae), Hymenophyllaceae), and (3) place schizaeoid ferns as sister to a large clade of "core leptosporangiates" that includes heterosporous ferns, tree ferns, and polypods. Divergence time estimates for ferns are reported from penalized likelihood analyses of our molecular data, with constraints from a reassessment of the fossil record.
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                Author and article information

                Contributors
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                Journal
                PhytoKeys
                PK
                Pensoft Publishers
                1314-2003
                1314-2011
                January 07 2021
                January 07 2021
                : 171
                : 47-59
                Article
                10.3897/phytokeys.171.58900
                7809011
                33510575
                © 2021

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